These incredibly innovative industrial processes of the mid-20th Century never cease to amaze me! I was lucky enough to sneak through the fence and explore the

These incredibly innovative industrial processes of the mid-20th Century never cease to amaze me! I was lucky enough to sneak through the fence and explore the abandoned Polaroid plant in Waltham along 128 before it was torn down. So many miles of metal piping, so many valves, so many Giant Red Buttons!